* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2c5f8d;
    --secondary-color: #4a90a4;
    --accent-color: #7fb3d3;
    --text-color: #333;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 5px 20px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 헤더 */
.header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav {
    padding: 1rem 0;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    transition: all 0.3s;
}

@media (max-width: 768px) {
    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        box-shadow: var(--shadow);
        padding: 1rem;
        gap: 1rem;
    }
}

/* 히어로 섹션 */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    margin-top: 70px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(44, 95, 141, 0.7);
    z-index: -1;
}

.hero-content {
    z-index: 1;
    max-width: 800px;
    padding: 2rem;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.3rem;
    font-weight: 300;
    line-height: 1.8;
}

/* 섹션 공통 스타일 */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* 회사소개 섹션 */
.about {
    position: relative;
    background: var(--bg-light);
    overflow: hidden;
}

.about-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.about-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(248, 249, 250, 0.85);
    z-index: 1;
}

.about .container {
    position: relative;
    z-index: 2;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.vision-text {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.slogan-text {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--secondary-color);
    margin-top: 1rem;
}

.about-info {
    display: grid;
    gap: 0;
}

/* 회사 연혁 */
.company-history {
    margin-top: 3rem;
    grid-column: 1 / -1;
}

.company-history h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
    text-align: center;
}

.history-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.history-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary-color);
    transition: transform 0.3s, box-shadow 0.3s;
}

.history-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.history-year {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.history-content h4 {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.history-content p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0.3rem 0;
}

.history-detail {
    font-size: 0.9rem;
    color: var(--text-light);
    font-style: italic;
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px dashed #ddd;
}

.history-download {
    margin-top: 2.5rem;
    text-align: center;
}

/* 연혁 반응형 */
@media (max-width: 1024px) {
    .history-timeline {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .history-timeline {
        grid-template-columns: 1fr;
    }
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 2rem;
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: background 0.3s, transform 0.2s;
}

.btn-download:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.btn-download span {
    font-size: 1.2rem;
}

/* 섹션 배경 이미지 */
.section-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.section-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.85);
    z-index: 1;
}

.services,
.competitiveness,
.location {
    position: relative;
    overflow: hidden;
}

.services .container,
.competitiveness .container,
.location .container {
    position: relative;
    z-index: 2;
}

.info-item {
    background: transparent;
    padding: 1.5rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}
.info-item:last-child {
    border-bottom: none;
}

.info-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.info-item p {
    color: var(--text-light);
    margin: 0.3rem 0;
}

/* 주요사업 섹션 */
.services {
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    justify-content: center;
    max-width: 1320px;
    margin: 0 auto;
}

/* 대형 태블릿/소형 데스크탑 (1024px 이하) - 2열 */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 770px;
    }
}

/* 태블릿 (768px 이하) - 2열 유지, 간격 축소 */
@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
        max-width: 550px;
    }
}

/* 모바일 (480px 이하) - 1열 */
@media (max-width: 480px) {
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        max-width: 100%;
    }
}

.service-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.service-image {
    height: 220px;
    background-size: cover;
    background-position: center;
}

.service-content {
    padding: 1.75rem;
    text-align: center;
}

.service-content h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.service-content p {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.service-content ul {
    list-style: none;
    padding-left: 0;
    display: inline-block;
    text-align: left;
}

.service-content ul li {
    color: var(--text-light);
    padding: 0.3rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.service-content ul li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

/* 경쟁력 섹션 */
.competitiveness {
    background: var(--white);
}

.competitiveness-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.competitiveness-item {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.competitiveness-item:hover {
    transform: translateY(-5px);
}

.competitiveness-item .icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.competitiveness-item h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.competitiveness-item p {
    color: var(--text-light);
    line-height: 1.7;
}

/* 문의하기 섹션 */
.contact {
    background: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
}

.contact-info h3,
.contact-form-section h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.contact-item strong {
    display: block;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--text-light);
}

.contact-form {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-family: 'Noto Sans KR', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn {
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
    font-family: 'Noto Sans KR', sans-serif;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* 개인정보 동의 */
.privacy-agreement {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.privacy-agreement input[type="checkbox"] {
    width: auto;
    margin-top: 0.3rem;
    cursor: pointer;
}

.privacy-agreement label {
    margin-bottom: 0;
    font-weight: normal;
    cursor: pointer;
}

.privacy-link {
    color: var(--primary-color);
    text-decoration: underline;
    cursor: pointer;
}

.privacy-link:hover {
    color: var(--secondary-color);
}

/* 문의 내역 섹션 */
.inquiries-section {
    margin-top: 3rem;
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.inquiries-section h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.inquiries-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.inquiry-item {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.inquiry-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.inquiry-name {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.inquiry-date {
    color: var(--text-light);
    font-size: 0.9rem;
}

.inquiry-details {
    display: grid;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.inquiry-detail-item {
    display: flex;
    gap: 0.5rem;
}

.inquiry-detail-item strong {
    color: var(--text-color);
    min-width: 80px;
}

.inquiry-detail-item span {
    color: var(--text-light);
}

.inquiry-message {
    background: var(--white);
    padding: 1rem;
    border-radius: 6px;
    margin-top: 1rem;
    color: var(--text-color);
    line-height: 1.6;
}

.no-inquiries {
    text-align: center;
    color: var(--text-light);
    padding: 2rem;
}

/* 모달 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    overflow-y: auto;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal-content {
    background-color: var(--white);
    border-radius: 12px;
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    position: relative;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    background: var(--white);
    z-index: 10;
}

.modal-header h2 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-light);
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s;
}

.modal-close:hover {
    color: var(--text-color);
}

.modal-body {
    padding: 2rem;
}

.modal-body h3 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.modal-body h3:first-child {
    margin-top: 0;
}

.modal-body p {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.modal-body ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.modal-body ul li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.privacy-note {
    background: #fff3cd;
    padding: 1rem;
    border-radius: 6px;
    border-left: 4px solid #ffc107;
    margin-top: 1.5rem;
    color: var(--text-color);
}

.modal-footer {
    padding: 1.5rem 2rem;
    border-top: 1px solid #eee;
    text-align: right;
}

/* 푸터 */
.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
}

.footer-section p {
    margin: 0.5rem 0;
    opacity: 0.9;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin: 0.5rem 0;
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s;
}

.footer-section a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    opacity: 0.8;
}

.footer-bottom .image-credit {
    margin-top: 0.8rem;
    font-size: 0.9rem;
    color: #e2e8f0;
    opacity: 1;
}

.footer-bottom .image-credit a {
    color: #60a5fa;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.footer-bottom .image-credit a:hover {
    color: #93c5fd;
    text-decoration: underline;
}

/* 오시는길 섹션 */
.location {
    background: var(--bg-light);
}

.location-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: start;
}

.location-info {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.location-info h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.address-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.address-main {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.address-detail {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 1rem;
}

.address-contact {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #ddd;
}

.address-contact p {
    color: var(--text-light);
    margin: 0.5rem 0;
}

.address-contact strong {
    color: var(--text-color);
    margin-right: 0.5rem;
}

.map-container {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.map-wrapper {
    position: relative;
    width: 100%;
    height: 450px;
}

.map {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 12px;
}

.map-marker-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(135deg, #1a365d, #0d1b2a);
    color: #ffffff;
    padding: 1rem 1.5rem;
    border-radius: 0 0 12px 12px;
    margin-top: -4px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.map-marker-info .marker-icon {
    font-size: 1.8rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.map-marker-info .marker-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.map-marker-info .marker-text strong {
    font-size: 1.1rem;
    color: #ffffff;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

.map-marker-info .marker-text span {
    font-size: 0.9rem;
    color: #e2e8f0;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

.map-address-overlay {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 10;
    pointer-events: none;
}

.map-address-box {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    max-width: 250px;
    pointer-events: auto;
}

.map-address-box h4 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.map-address-box p {
    color: var(--text-light);
    margin: 0.3rem 0;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .competitiveness-grid {
        grid-template-columns: 1fr;
    }

    .location-content {
        grid-template-columns: 1fr;
    }

    .map-wrapper {
        height: 350px;
    }

    .map-address-overlay {
        position: relative;
        top: 0;
        left: 0;
        margin-bottom: 1rem;
    }

    .map-address-box {
        max-width: 100%;
    }
}